Controling of medium voltage switchgear

Ovaj diplomski rad bavi se definiranjem rasklopnih postrojenja, upravljanjem postrojenjima i njihovoj zaštiti. U prvom dijelu rada govori se o sklopnim aparatima i različitim tehnikama prekidanja struje. Danas su u uporabi najčešće mehanički sklopni aparati koje dijelimo na prekidače, rastavljače i sklopke. Navedeni uređaji koriste se kod niskog, srednjeg i visokog napona. U radu će se prikazati osnovna podjela sklopnih aparata te objasniti njihov princip rada. U nastavku rada su opisane tehnike prekidanja struje te objašnjeni mediji za gašenje električnog luka. Pojašnjava se i tema rasklopnih postrojenja, njihova podjela te posljedice kratkog spoja. U drugom dijelu rada bavimo se temom SCADA-e (Supervisory Control And Data Acquisition), njenim komponentama, funkcijama te dijagnozama kvara. Na kraju rada objašnjavamo način zaštite rasklopnih postrojenja te pojašnjavamo više mogućih načina njihove izvedbe.This graduate thesis deals with the definition of switching stations, switching station management and their protection. In the first part of the work we talk about switchgears and various switching techniques. Today, the most commonly used mechanical switchgear is the switches, disconnectors and isolating switches. These devices are used for low, medium and high voltages. The paper will show the basic division of switchgear and explain their working principle. The following describes techniques for breaking the current and an explanation of the electric arc discharge media. The topic of switching stations, their distribution and the consequences of a short circuit is also explained. In the second part we are dealing with SCADA (Supervisory Control And Data Acquisition), its components, functions, and failure diagnoses. At the end of the paper, we explain the way of protecting the switching stations and explaining the many possible ways of implementing them